This is a Rattleback
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Uploaded by adobokarekare on Apr 2, 2007
Spinning a plastic rattleback to the tune of "Rhythm of the Night" by El DeBarge
76 videosYouTube Mix for El DeBarge- 0:49
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@KKinsane2009 Resonance is the key... now about thoes right locks?
redneckhippiefreak 1 year ago
you don't even need to spin it to make it uh... spin (=p)
if you tap it on one end lightly - enough to make it rattle - it spins on it's own.
(meaning I agree with Kkinsane, it's the oscillations that causes it. that, and an off-centre pivot)
PsychoJensa 1 year ago
its because of vibration, and it will be common knowledge in about 30 years.
KKinsane2009 2 years ago
it has a lot to do with the shape and gravity
dacke93 2 years ago 2
Oh, it does. Not my fault if you can't understand complex motion of objects.
mahdesimon 2 years ago
That does not explain ANYTHING.
CaspaB 2 years ago
It's due to the instability on the axis, that's why it vibrates when spinning the wrong direction and that's why it turns and start spinning the other way.
mahdesimon 3 years ago
Rattle backs aka Celt stones :)
AuburnUniversity90 4 years ago
how does it do that?
AVerbene 4 years ago